Home / 259,931.72-389,010.47-217,859.30

Finding the Fourth Proportional to 259,931.72, 389,010.47 and 217,859.30

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Solution

The fourth proportional to 259,931.72, 389,010.47 and 217,859.30 is: 326,045.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,931.72 : 389,010.47 = 217,859.30 : x
  2. Step 2: Convert to fraction form
    259,931.72/389,010.47 = 217,859.30/x
  3. Step 3: Cross multiply
    259,931.72x = 389,010.47 × 217,859.30
  4. Step 4: Simplify right side
    259,931.72x = 84,749,545,652.52
  5. Step 5: Solve for x
    x = 84,749,545,652.52/259,931.72
  6. Step 6: Final answer
    x = 326,045.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.